Weather Alert in Maine
Winter Weather Advisory issued February 20 at 1:10PM EST until February 21 at 7:00AM EST by NWS Gray ME
AREAS AFFECTED: Coastal York; Eastern Hillsborough; Interior Rockingham; Coastal Rockingham
DESCRIPTION: * WHAT...Snow. Total snow accumulations between 4 and 6 inches. * WHERE...In Maine, Coastal York County. In New Hampshire, Coastal Rockingham, Eastern Hillsborough, and Interior Rockingham Counties. * WHEN...Until 7 AM EST Saturday. * IMPACTS...A weak weather system will bring a period of snowfall to the region. Although snowfall amounts will be light, travel will still be impacted due to snowfall accumulations on untreated roads. The potential exists for snowbands that will bring periods of locally heavy snowfall, which will lead to rapid snow accumulations and extremely dangerous travel conditions. Periods of moderate and heavy snow will combine with low visibility to create dangerous driving conditions. The hazardous conditions could impact the Friday evening commute.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions can be obtained by going to newengland511.org
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Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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